Average Weather For *Mt Shasta, California, USA

*SHASTA WEDDINGS temperature is cooler than Mt. Shasta city.
It has never exceeded 90 degrees

This report describes the typical weather at the Mount Shasta (Mt Shasta, California, United States) weather station over the course of an average year. It is based on the historical records from 1977 to 2012. Earlier records are either unavailable or unreliable.

Mt Shasta, California has a mediterranean climate with dry warm summers and mild winters. The area within 25 miles of this station is covered by forests (87%),croplands (8%), and grasslands (3%).

Temperature

Over the course of a year, the temperature typically varies from 27°F to 86°F and is rarely below 18°F or above 93°F.

Daily High and Low Temperature

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

The warm season lasts from June 21 to September 12 with an average daily high temperature above 77°F. The hottest day of the year is July 30, with an average high of 86°F and low of 53°F.

The cold season lasts from November 11 to March 11 with an average daily high temperature below 51°F. The coldest day of the year is December 25, with an average low of 27°F and high of 42°F.

Fraction of Time Spent in Various Temperature Bands

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

The length of the day varies significantly over the course of the year. The shortest day is December 21with 9:11 hours of daylight; the longest day is June 20 with 15:09 hours of daylight.

Daily Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 5:35am on June 12 and the latest sunset is at 8:47pm on June 28. The latest sunrise is at 7:43am on November 3 and the earliest sunset is at 4:40pm on December 10.

Daylight saving time (DST) is observed in this location during 2012, starting in the spring on March 11and ending in the fall on November 4.

Daily Sunrise & Sunset with Twilight and Daylight Saving Time

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the "DST" labels.

Clouds

The median cloud cover ranges from 0% (clear) to 55% (partly cloudy). The sky is cloudiest on February 6and clearest on July 10. The clearer part of the year begins around April 20. The cloudier part of the year begins around November 9.

Median Cloud Cover

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On July 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 45% of the time, andovercast or mostly cloudy 4% of the time.

On February 6, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 27% of the time, and clear or mostly clear 23% of the time.

Cloud Cover Types

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around March 13, occurring in 29% of days. Precipitation is least likely around August 3, occurring in 3% of days.

Probability of Precipitation at Some Point in the Day

The fraction of days in which various types of precipitation are observed. If more than one type of precipitation is reported in a given day, the more severe precipitation is counted. For example, if light rain is observed in the same day as a thunderstorm, that day counts towards the thunderstorm totals. The order of severity is from the top down in this graph, with the most severe at the bottom.

Over the entire year, the most common forms of precipitation are light rain, light snow, and moderate rain.

Light rain is the most severe precipitation observed during 34% of those days with precipitation. It is most likely around May 11, when it is observed during 10% of all days.

Light snow is the most severe precipitation observed during 32% of those days with precipitation. It is most likely around March 16, when it is observed during 14% of all days.

Moderate rain is the most severe precipitation observed during 18% of those days with precipitation. It is most likely around January 24, when it is observed during 6% of all days.

Types of Precipitation Throughout the Year

Relative frequency of various types of precipitation over the course of a typical year.

During the warm season, which lasts from June 21 to September 12, there is a 5% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (62% of days with precipitation have at worst light rain), moderate rain (16%), heavy rain (13%), and thunderstorms (9%).

During the cold season, which lasts from November 11 to March 11, there is a 27% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light snow (41% of days with precipitation have at worst light snow), light rain (23%), moderate rain (18%), and moderate snow (8%).

Warm Season Precipitation

Cold Season Precipitation

Relative frequency of various types of precipitation during the warm and cold seasons respectively.

Snow

The likelihood of snow falling is highest around March 13, occurring in 18% of days. The season in which it is relatively likely for snow to fall spans from November 6 to May 7.

Probability of Snow Fall Being Reported in a Given Day

Probability that snow will be reported at least once in a given day. The season is defined as the period during which the probability is greater than one third the maximum probability.

During peak snow season, accumulation at this location on a given day is very unlikely. The chances of there being snow on the ground are highest around February 5, occurring 6% of the time.

Chance of at Least Some Snow on the Ground

The probability that there is snow on the ground. The season is defined as the period during which the probability is greater than one third of the maximum probability.

The snow is typically at its deepest on January 3, with a median depth of 13.3"; the depth exceeds 14.1"only one year out of ten.

Snow Depth When there is Snow on the Ground

The median depth of snow during times when there is at least some snow on the ground, with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Humidity

The relative humidity typically ranges from 25% (dry) to 89% (very humid) over the course of the year, rarely dropping below 15% (very dry) and reaching as high as 100% (very humid).

The air is driest around August 6, at which time the relative humidity drops below 28% (dry) three days out of four; it is most humid around January 4, exceeding 84% (humid) three days out of four.

Relative Humidity

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a year, the dew point typically varies from 21°F (dry) to 52°F (very comfortable) and is rarely below 10°F (dry) or above 60°F (comfortable).

The time of the year between July 2 and August 14 is the most comfortable, with dew points that are neither too dry nor too muggy.

Dew Point

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of the year typical wind speeds vary from 0 mph to 9 mph (calm to gentle breeze), rarely exceeding 15 mph (moderate breeze).

The highest average wind speed of 5 mph (light breeze) occurs around April 5, at which time the average daily maximum wind speed is 9 mph (gentle breeze).

The lowest average wind speed of 3 mph (light air) occurs around August 3, at which time the average daily maximum wind speed is 7 mph (light breeze).

Wind Speed

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

The wind is most often out of the north (13% of the time), north west (12% of the time), and south east(10% of the time). The wind is least often out of the south west (1% of the time) and west (3% of the time).

Wind Directions Over the Entire Year

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.